07-19-2022 02:06 AM
The DHCP server is external. (192.168.82.22)
The catalyst is the Core Switch. (172.29.8.1)
We are getting the Following debug log while trying to fetch DHCP to a end machine.
The show-tech log is attached with this mail.
*Jul 18 14:42:19.889: Option 82 not present
*Jul 18 14:42:19.890: DHCPD: tableid for 192.168.82.2 on Vlan82 is 0
*Jul 18 14:42:19.890: DHCPD: client's VPN is .
*Jul 18 14:42:19.890: DHCPD: No option 125
*Jul 18 14:42:19.890: DHCPD: Option 125 not present in the msg.
*Jul 18 14:42:19.890: Option 82 not present
*Jul 18 14:42:19.891: Option 82 not present
*Jul 18 14:42:19.891: DHCPD: Option 125 not present in the msg.
*Jul 18 14:42:19.892: DHCPD: Looking up binding using address 192.168.82.2
*Jul 18 14:42:19.892: DHCPD: setting giaddr to 192.168.82.2.
*Jul 18 14:42:19.892: DHCPD: BOOTREQUEST from 0100.5056.a0eb.87 forwarded to 192.168.82.22.
*Jul 18 14:42:20.390: Option 82 not present
*Jul 18 14:42:20.390: DHCPD: tableid for 172.20.5.2 on Vlan122 is 0
*Jul 18 14:42:20.391: DHCPD: client's VPN is .
*Jul 18 14:42:20.391: DHCPD: No option 125
*Jul 18 14:42:20.391: DHCPD: Option 125 not present in the msg.
*Jul 18 14:42:20.391: Option 82 not present
*Jul 18 14:42:20.391: Option 82 not present
As per the Cisco TAC configured the Command set #ip dhcp relay information trust-all globally still getting the same debug log and the end machine is not getting any IP from DHCP.
network Diagram and Sh tech of switch are attached.
07-19-2022 04:40 AM
Can you check attachmnet i dont found it.
07-19-2022 07:03 AM
Hello,
what is the external DHCP server ? Do you actually have options 82 and 125 configured ? Post the full running configuration of the switch as well...
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide